"They've been wiping everything down, sanitizing it before the kids use it," Dietline said. "I think they've been doing a really good job at everything that we've seen."

Health care providers are recommending that people without flu shots receive one. They also say people in crowded areas should wash their hands more often and avoid touching the eyes, nose and mouth.

Jake Nelson said he's drilled those tips into his twin 12-year-old boys.

"You definitely always worry about it," Nelson said. "That's why we're always talking to our kids about washing their hands and stuff at school. But they're 12-year-old boys, so they have to be told to wash their hands when they come out of the bathroom."